VisionC (ETDRS Visual Acuity) Взлом 2.1.1

Скриншоты

Описание

VisionC is the first ETDRS chart completely configurable to be presented at any distance from 20 cm to 400 cm (1 cm step) and for any Contrast from 0 to 100% (1% step). It is the only one that allows you to control de luminance of the background and the optotype with a low-cost external luminance meter. You can use PicoDisplay App and Pico (Palette) device for this purpose.

The visual acuity with the ETDRS is usually measured at three distances (far, intermediate and near) but research studies sometimes differ in the specific distance for each one of the categories. With VisionC you can select the specific distance for each one of these three configurations in such a way you can rapidly access to the specific distance you desire.

The App comes with a different set of letters in order to avoid memorization. Therefore either letters for distance, intermediate and near or right, left and both eyes differ to prevent memorization.

You can join our community in order to ask any question or to receive support:

www.facebook.com/groups/qvisionacademy/

История обновлений

2.1.1

2023-02-26

Added compatibility for iPads launched up to end 2022

2.1

2022-04-16

Included Snellen chart for patients non familiarized with Sloan letters. Please, use the Standard Sloan letters and do not mix subjects measured with different optotypes in your analyses.

2.0.5

2022-01-12

Changes in terms and conditions

2.0.4

2021-10-21

Added support for iPad 9th Generation (2021)

2.0.3

2021-08-22

Added support for 2021 iPads

2.0.2

2020-10-31

Compatibility for iPad 8th and iPad Air 4 Generations added

2.0.1

2019-11-18

Updated to be compatible with new iPads
The calibration with Pico has been eliminated. This option should be done with the App PicoDisplay and the Pico device from Palette.

2.0

2019-08-22

VisionC has completely changed for adapting to the future updates of IOS devices. Major changes are:
1.- The App is now an ETDRS that can be configured to be used at any distance from 20 cm to 4 meters and at any contrast from 0% to 100%.
2.- The isolated Sloan crowded letters have been removed in the 2.0 version. Please, do not update if you want to maintain this option.
3.- (Optional) We have implemented the possibility to characterize the display with a PICO device in order to measure the correspondence between brightness and luminance and to correct automatically the gamma function.

1.0.1

2016-06-01

Changelog 1.0.1
•New design of the Start Layout.
•Set the screen brightness directly in the App.
•New distance of presentation (2m)
•Reconfigured visual acuity lines at near which were aliased due to screen limitations.
•Visual acuity labels size optimized for easier reading.
•Contrast in log units or percentage.
•Corrected bugs from the previous version.

1.0.0

2015-10-12